Apple Software Engineer interview questions

I was contacted on LinkedIn by a recruiter for a software engineering role. I had an initial recruiting call to explain the position and also some surprise technical questions at the end of that call. Then I had one phone screen with hiring manager to discuss the role and opportunities and one technical phone screen with an engineer on the team. Then I had a two day on site: 8 people the first day and 4 people the next day. The first day was direct members of the team (engineering) and related teams. The next day was VPs and directors that asked more behavioral questions.